Built for compacting soil around trenches, foundations, utility lines, and other confined excavation areas, the Ingersoll Rand 341A2M Dual Action Backfill Tamper delivers 1,550 blows per minute (BPM) with a 4-inch piston stroke to produce rapid, uniform compaction. Its dual-action design delivers force on both the upstroke and downstroke, increasing compaction efficiency while helping operators complete backfilling work more quickly. This makes the tool well suited for construction crews, utility contractors, and municipal maintenance teams that require dependable pneumatic tamping performance.
The 341A2M features a proven pneumatic valve design (a reliable reciprocating air valve that provides consistent striking action), a plated piston for improved wear resistance, and a dual-action sand wiper that helps prevent dirt and abrasive material from entering the cylinder. An integrated lubricator supports smooth internal operation, while the built-in muffler and side exhaust help reduce noise and direct exhaust away from the operator. Together, these features provide dependable performance for demanding backfill compaction applications.
Type: Dual Action Backfill Tamper | Model: 341A2M | Blows Per Minute: 1,550 BPM | Stroke Length: 4 in. (102 mm) | Piston Bore: 1.5 in. (38 mm) | Air Consumption: 23 CFM | Tamper Shoe: 5.5 in. x 5.5 in. | Air Inlet: 3/8 in. NPT | Recommended Hose Size: 1/2 in. | Length: 44 in. | Weight: 35 lb
Features:
- Dual-action tamping mechanism delivers impact on both piston strokes to improve compaction efficiency.
- Produces 1,550 blows per minute for rapid consolidation of backfill materials.
- 4-inch piston stroke provides strong impact energy for compacting soil around trenches, footings, and utilities.
- Proven pneumatic valve design delivers dependable reciprocating performance during continuous operation.
- Built-in lubricator supports smooth internal operation and helps reduce component wear.
- Dual-action sand wiper minimizes dirt and abrasive material entering the cylinder.
- Plated piston improves durability in dusty and abrasive jobsite environments.
- Built-in muffler and side exhaust help reduce operating noise while directing exhaust away from the work area.

Tech Tip: To increase tool performance, extend tool life and lessen repair costs use it with a Filter-Regulator-Lubricator (FRLs)
Applications:
- Compacting soil around water, sewer, gas, and electrical utility trenches.
- Backfilling around foundations, retaining walls, and structural footings.
- Roadway, sidewalk, and pavement repair where confined-area compaction is required.
- Pipeline installation and maintenance projects requiring consistent soil consolidation.
- General construction, municipal, and infrastructure maintenance operations.
FAQs:
- Q: What does "dual action" mean on the 341A2M?
A: The dual-action mechanism delivers tamping force on both the upward and downward piston strokes, helping increase compaction efficiency compared to single-action designs. - Q: What types of materials can this tamper compact?
A: It is intended for compacting backfill soils and similar materials around trenches, foundations, utility installations, and other confined construction areas. - Q: Why is a built-in lubricator beneficial?
A: The lubricator continuously supplies oil to internal moving components, promoting smoother operation and helping reduce wear during extended use. - Q: What compressed air supply is recommended?
A: The tool features a 3/8-inch NPT air inlet, requires a 1/2-inch air hose, and consumes approximately 23 CFM during operation.
| SKU | Type | Stroke in (mm) |
Bore in (mm) |
Length in (mm) |
Weight lb (kg) |
bpm | cfm | Inlet Size NPT in |
Recommended Hose Size in (mm) |
|---|---|---|---|---|---|---|---|---|---|
| Sand Rammers | |||||||||
| 130A1M | Bench | 2.5" (63) | 1" (25) | 21.5" (546) | 11.56 (5.24) | 870 | 14 | 1/4" | 3/8" (10) |
| 241A1M | Floor | 4" (102) | 1.31" (33) | 52.75" (1340) | 26.88 (12.2) | 1,590 | 29 | 3/8" | 1/2" (13) |
| Backfill Tampers | |||||||||
| 341A2M | N/A | 4" (102) | 1.63" (41) | 52.75" (1340) | 34.88 (15.8) | 1,550 | 29 | 3/8" | 1/2" (13) |
| 441A2 | N/A | 4" (102) | 2" (51) | 50.88" (1292) | 47.13 (21.4) | 1,750 | 36 | 3/8" | 1/2" (13) |
Looking for more information about Ingersoll Rand Construction Tool? Click here to view the Catalog
For help choosing the correct Ingersoll Rand Backfill Tampers for your application, please call (800) 608-5210 or email info@intlairtool.com
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
